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Paraguayan footballer (born 1970)
In this Spanish name, the first or paternal surname is Jara and the second or maternal family name is Martínez.
Jara made his international debut in the Paraguay national football team on 10 June 1993 in a friendly match against Mexico (3-1 loss), substituting Carlos Gamarra in the 75th minute. He obtained a total number of 17 international caps, scoring no goals for the national side.